Scissors



Sept, 30, 1958 G. vlDo soIssoRs Filed Dec. 19, 1957 United States PatentO SCISSORS George Vido, Newark, N. J.

Application December 19, 1957, Serial No. 703,834

4 Claims. (Cl. 12S-321) This invention relates to instruments such asscissors and similar articles, having pivotally-connected coactingvblades, jaws or members.

One of the objects of the invention is to provide a scissors of suchconstruction that the blades are always held in pressure contact, forcutting eciency, and which may be readily taken apart for completesterilization, as necessary, for example, in a surgical scissors.

It is known that the usual scissors or shears has its two cutting bladespivotally Connected by a screw or a rivet and that, especially afteruse, `a looseness develops, the blades not being held rmly together forcutting efiiciency. The user then has to exert opposing pressure on thethumb and finger rings in order to hold the blades lirmly together; thisputs a continuous stress on the workers hand, which is not onlytiresome, but detracts from the skill of the user, as well known tobarbers and others who use scissors or shears. Barbers also know thatsuch a scissors result in split hairs yif the proper pressure is notcontinuously maintained, as sometimes happens. My invention avoids thementioned objections.

The drawings illustrate the invention, and in these:

Fig. 1 is a plan view of a scissors;

Fig. 2 is a side view, partly in section, of part of the scissors;

Fig. 3 is a plan view of a surgical separating tongs embodying theinvention; and,

Fig. 4 is a sectional view showing the means for pivotally connectingthe blades or coacting members.

Referring to the drawings for a more detailed description, and at firstto Figs. 1, 2 and 4, the numerals 5 and and 7 indicate, respectively,coacting scissor blades, which respectively have Shanks A and 7A andthumb and finger rings 5B and 7B. To pivotally connect the blades,annular grooves 5C and 7C are cut into the inner faces of the blades, asclearly shown in Fig. 4, and a ring or annulus 9 is fitted into saidgrooves, the latter each being one-half as deep as the length of thering. The ring is preferably easily removable from the grooves.

To hold the blades together, a bowed spring 10 is shown pivoted at 10Ato the shank 5A, and exerts pressure at its other end, on blade 7,adjacent the pivot. To put the blades together, or to take them apart,the spring is swung laterally, as shown in dotted lines in Fig. 1. Tohold the spring in place, a small projection or tit 12 is formed on theunder surface of the free end of the 2,854,005 Patented Sept. 30, 1958 lCC spring and its into a depression 15 (Fig. 4) formed in the surface ofblade 7. For the same purpose, a sha1- low concave depression is made inthe pivoted end of the spring (Fig. 1), in the edge thereof, into whichdepression a small projection 16 from shank 5A fits when the spring isin holding position, the spring being readily moved away from thisprojection by lateral pressure on the spring.

Referring now to Fig. 3, this shows a separating tongs, used in surgeryto hold two parts of the body apart, and comprises jaws 18 :and 19, withshanks 18A and 19A respectively, and thumb and finger rings 18B and 19Brespectively. The two parts are pivoted at 21 by the means previouslydescribed for the scissors, and are so formed that when the thumb andfinger rings are moved toward each other, the jaws move apart. A curvedspring 23, similar to the described spring 10, holds the two partstogether, `and similar means are provided for holding the spring inpressure-exerting position. Additionally, however, I provide an arcuatemember 25. This member extends laterally from the pivoted end of thespring to the shank 19A, and has a series of depressions 26 in its uppersurface to form tits on its under surface. These tits tit into adepression in shank 19A to hold the jaws in a selected position.

What is claimed is:

1. In a scissors or the like, having a pair of coacting blades or jaws,means for pivotally connecting the blades or jaws together releasably,without the use of a rivet, screw or pin, and consisting, essentially,of an annular member fitting into opposed annular grooves formed in theinner faces of the blades or jaws, and a spring pivotally connected toone of the blades or jaws and pressing against the other blade or jaw,to hold the blades together.

2. In a scissors or the like, having a pair of coacting blades or jaws,means for pivotally connecting the blades or jaws together releasably,without the use of a rivet, screw or pin, and consisting, essentially,of an annular member fitting into opposed annular grooves formed in theinner faces of the blades or jaws, and a spring pivotally connected toone of the blades or jaws and pressing against the other blade or jaw,to hold the blades'together, said spring being pivoted adjacent one ofits ends for lateral swinging movement, its other end being adjacent thepivotal connection.

3. The combination specied in claim 2, in combination with catch means,yieldable to pressure, for holding the spring in operative position. i

4. The combination specified in claim 2, in combination with a memberconnected to said spring and extending laterally therefrom to and incontact with the shank of the opposite blade or jaw, and selective meanson said member for holding the blades or jaws a desired distance apart.

Lincoln Apr. 29, 1941 Cacarillo Ian. 1, 1946

